在SAT语法考试前，掌握好一些常见句型、考试相关的基础知识对考生们来说绝对是一件百利无一害的事。只有适合自己的备考方法才会有效提高我们的成绩。下面给大家讲解的是SAT语法基础知识。
一、题型介绍
语法测试属于SAT reasoning test中的写作(writing)部分，与essay writing一起组成写作的大板块。整个语法部分包括三种题型： ISE(Identifying sentence errors，即挑错题)18小题、IS(Improving sentences，即句子改进题)25小题、IP(Improving paragraphs，即段落改进题)6小题，所有题目均为五选一。在这三类题目中， 对IS题目的考察犹为明显。一般来说，完成一道题目需要经过读题、解答、检查的过程。读题的过程既包括了读题干和读选项两部分。读题干的过程中对句子含义的理解(总体意思和划线部分与整句的关系)约占百分之三十左右，而对句子结构的理解(抛出非中心部分，找出主语中心词、谓语动词及宾语中心词)约占了百分之七十。如此分析句子的目的是找出一些常见的差异部分(比如动词三单?逗号分号?代词单复?时态差异?)。差异即考点。一旦考点被锁定，接下来我们运用考点，直接秒杀最“正确”的选项。讲究快。先看最有可能的选项。同时注意自杀词的出现。最后就看你所选的SVO和“，”和“;”是否有问题。大概4秒可以完成。我们所提到的考点主要是针对SAT常考的词法，句法，段法进行归纳，但要综合的去运用，不要孤立去学习。
下面列出的是一个粗略统计的语法常考条目表：.
动词错误Verb errors
代词错误Pronoun errors
逻辑主语 Faulty Logicality
句子构成错误Run-ons & Fragments
修饰语位置错误Misplaced modifiers
形容词/ 副词Adjective/Adverb
名词使用错误Plural-singular errors
措词错误Diction errors
平行结构缺失Lack of parallelism
句子或段落冗余Redundancy & wordiness即简洁原则
接下来的内容中，本文总结了一些常见的考试句型和考试信息，希望广大考生根据自己的实际掌握情况进行综合运用
二、常考句型
这些句型是将真题与OG中常见常考的句型总结给大家并提供了应试策略与答题技巧，希望同学们在考试前反复练习，以达到“秒杀”的效果。
(一) 主谓一致
主谓一致一直都是SAT考试的热点，每套题出现的频率都在三个以上。做这种题需要把握句子的结构，找出SVO是关键。
经典句型：主语，同位语/分词短语，动词
应试技巧：我们需要做的是釜底抽薪，要勇敢的抛弃非中心部分，找到中心的主语。
1. (2006-10-S6-23) The grooved and barbed spears of the box jellyfish,each(A) trailed by(B) a poison thread, is released(C) when(D)the animal is threatened No error(E)
2. (2007-1-S4-25) Peter’s seemingly effortless(A) flights, achieved through(B) the use of sophisticated technical equipment, continues(C) to delight those who(D) see the play Peter Pan. No error(E)
(二) 虚拟语气
应试技巧：背熟句式 对号入座
3.Undoubtedly, more voters in the urban areas will have voted(A) for Julia Morton(B) if(C) she had taken a less(D) conservative stand on zoning codes than she did. No error(E)
4.Some of the workers who resent(A) the supervisor's authority would probably(B) feel uncomfortable if(C) they were to acquire the independence that they demand(D) . No error(E)
(三) 逻辑主语
经典句型：doing/(having)done/done/ to do, svo
应试技巧：当分词或者不定式放在句首，一定要考虑它的主语问题。一般情况下，句首是现在分词或者不定式的主动态，主语通常是人;句首是过去分词主语通常是物。但是考生在解题时一定要留意特殊情况，主语究竟是发出句首分词描述的动作，还是个承受者。
5. Before signing up for next year's courses, the students' schedules must be approved by their advisers.
(A) the students' schedules must be approved by their advisers
(B) the students must have their schedules approved by their advisers
(C) their advisers must approve the schedule of each student
(D) the schedules of students must be approved, and by their advisers
(E) approval of each one's schedule must be given by their advisers
6.Brought to the United States at the age of thirteen to receive a Western education, his first book discusses Lee Yam Phou's childhood in China.
(A) his first book discusses Lee Yah Phou's childhood in China
(B) Lee Yan Phou's childhood in China is the subjec of his First book
(C) the subject of his first book is Lee Yah Phou' s childhood in China
(D) Lee Yan Phou discusses his childhood in China in his first book
(E) Lee Yan Phou, whose childhood was in China, discusses this in his first book
以上就是为大家分享的SAT语法基础知识讲解，相信通过举例讲解之后大家对于这部分知识点很清楚了，预祝大家取得满意的SAT成绩。
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